Magnetic recording media and hard disk drive apparatus having the same

Abstract

A perpendicular magnetic recording medium includes a substrate forming a base, a magnetic layer deposited on a surface of the substrate in a direction along a thickness of the substrate, and an overcoat deposited on the magnetic layer in the direction along the thickness of the substrate to protect the magnetic layer, and having a texture formed partially indented from a surface and textured to have a predetermined surface roughness. The hard disk drive apparatus includes a magnetic head and the perpendicular magnetic recording medium where data is recorded and stored using the magnetic head.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C § 119(a) from Korean Patent Application No. 10-2007-0011939, filed on Feb. 6, 2007, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present general inventive concept relates to perpendicular magnetic recording media and a hard disk drive apparatus having the same, and more particularly, to perpendicular magnetic recording media that can make a structure of a magnetic recording medium in a desired shape and prevent deterioration of a magnetic performance while securing a sufficient surface roughness required for the magnetic recording medium so that various problems such as a head disk interference (HDI) can be prevented, and a hard disk drive apparatus having the same.[0004]2. Description of the Related Art[0005]Magnetic recording media used for hard dis...

AI Technical Summary

Benefits of technology

[0012]The present general inventive concept provides perpendicular magnetic recording media that can make a structure of a magnetic recording medium in a desired shape and prevent deterioration of a magnetic performance while securing a sufficient surface roughness required for the magnetic recording medium so that various problems such as a head disk interference (HDI) can be prevented, and a hard disk drive apparatus having the same.

Problems solved by technology

Accordingly, in the case of the PMR in which the hexagonal prism crystal structure of a Co alloy is grown perpendicularly to the surface of the magnetic recording medium, since the easy axis direction is formed vertically, when the texture is formed on the substrate, the magnetic performance can be deteriorated.

However, in the PMR where the texture is not formed on the substrate, since a sufficient surface roughness with respect to the magnetic recording medium cannot be obtained, a head disk interface (HDI) problem that a physical shock is generated between the magnetic head and the magnetic recording medium, that is, a disk of a hard disk drive, during the operation of the hard disk drive can be generated.

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